Mechanical Engineering graduate Trey Pfeiffer had a big weekend. On Friday, he was one of 11 Spartans honored with a Board of Trustees Award for having the highest scholastic average at the close of their last semester at MSU – a 4.0 GPA.On Saturday,he carried the Engineering banner during afternoon commencement ceremonies in the Breslin. The College had almost 340 among MSU’s 2,700 graduates this weekend. Trey,of Otsego, is a member of the Honors College. He has accepted an R&D job at Stryker in Portage.